View Full Version : Need help senor reading chart
jimmyjewfish
19-11-2012, 04:55 AM
hi everyone just need help need a chart reading with temp to ohms to test outdoor coil sensors and indoor
Tesla
19-11-2012, 07:01 AM
Hi Jimmy
http://www.datasheetarchive.com/temperature+to+resistance+of+10k+ntc+resistor-datasheet.html should help point you in the right direction. Most sensors used are Thermistors NTC and usually 10k but can come in like 2k 5k 20k 100k etc. If you measure your sensor at around 25degC you should get an idea of how many k it is.
Most as suppliers of controls suppliers will charge from $25 to $250 for a sensor which you can buy from jaycar electronics for less than $5.
martinw58
19-11-2012, 07:50 PM
Values for various popular resistance thermometers
Temperature
in °C
Pt100
in Ω (http://en.wikipedia.org/wiki/Ohm_(unit))
Pt1000
in Ω
PTC (http://en.wikipedia.org/wiki/Positive_temperature_coefficient)
in Ω
NTC (http://en.wikipedia.org/wiki/Negative_temperature_coefficient)
in Ω
NTC
in Ω
NTC
in Ω
NTC
in Ω
NTC
in Ω
Typ: 404
Typ: 501
Typ: 201
Typ: 101
Typ: 102
Typ: 103
Typ: 104
Typ: 105
−50
80.31
803.1
1032
−45
82.29
822.9
1084
−40
84.27
842.7
1135
50475
−35
86.25
862.5
1191
36405
−30
88.22
882.2
1246
26550
−25
90.19
901.9
1306
26083
19560
−20
92.16
921.6
1366
19414
14560
−15
94.12
941.2
1430
14596
10943
−10
96.09
960.9
1493
11066
8299
−5
98.04
980.4
1561
31389
8466
0
100.00
1000.0
1628
23868
6536
5
101.95
1019.5
1700
18299
5078
10
103.90
1039.0
1771
14130
3986
15
105.85
1058.5
1847
10998
20
107.79
1077.9
1922
8618
25
109.73
1097.3
2000
6800
15000
30
111.67
1116.7
2080
5401
11933
35
113.61
1136.1
2162
4317
9522
40
115.54
1155.4
2244
3471
7657
45
117.47
1174.7
2330
6194
50
119.40
1194.0
2415
5039
55
121.32
1213.2
2505
4299
27475
60
123.24
1232.4
2595
3756
22590
65
125.16
1251.6
2689
18668
70
127.07
1270.7
2782
15052
75
128.98
1289.8
2880
12932
80
130.89
1308.9
2977
10837
85
132.80
1328.0
3079
9121
90
134.70
1347.0
3180
7708
95
136.60
1366.0
3285
6539
100
138.50
1385.0
3390
105
140.39
1403.9
110
142.29
1422.9
150
157.31
1573.1
200
175.84
1758.4
Powered by vBulletin® Version 4.2.1 Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.